Tramway rail



Dec. 29 1925 c. ANDERSEN ET AL TRAMWAY RAIL Filed Sept. 15, 1924' Patented Dec. 29, 1925. V

UNITED. STATES assasse PATENT orrlca.

cam. ANDERS EN, LORIS CHRISTIANSEN, LUDVIG rLonIN, AND ALBERT FLODIIN, on

COPENHAGEN, DENMARK.

TRAMWAY RAIL.

Application filed September 16, 1924. Serial No. 738,103.

To all whom it may concern:

Be it known that we, CARL ANnnnsnn,

of Copenhagen, Kobmagergade 59, Denmark, LORIS CHRISTIANSEN, of Copenhagen,

Jagtvej 155, Denmark, LUDVIG FLonIN, Co-

penhagen, Aalekistevej 246, Denmark, and

ALBERT FLODIN, at the same place, have invented certain new and useful Improvements in Tramway Rails, of which the following is a specification.

As well known renewal of the imbedded tramway rails requires extraordinary work, all covering material, as asphaltum, concrete etc. having to be broken up and after the renewal of the rails to be remended, which in connection with rejecting of all the rails does not only occasion great expenses, but also an exceedingly g are inconvenience as well for the passengers and the business people living in these streets, the comprehensive works having necessarily to extend over a comparatively long period.

The present invention tends to remedy all these inconveniences by the arrangement, that each rail is formed in two sections, namely an upper headpart and alower part, which latter forms the rail foot, the web and the lowest part of the rail head. The latter is by a zigzag cross out divided into the two 30 mentioned parts, engaging each other so that a sideway pushing of the uppermost part of the rail head is impossible. In order to prevent also an eventual longitudinal pushing the upper and the lower rail head parts can besides be connected with each other by small steel blocks, lodged in both parts. Moreover the ends of the upper rail parts can like the ends of the lower parts be connected with each other in a well known manner, by autogenous welding or the like so that a longitudinal shifting or pushing is rendered impossible.

A form of the invention is shown in the drawing in which Figs, 1 and 2 show cross sections of the rail parts separated from each other,

Fig. 3 a cross section through the jointed rail parts.

As shown the cut through the rail head is made so that the uppermost part A at one side has a downward open groove on and on the opposite side a smaller, also downward open groove 6, so that at both sides grasping edges 0 and d respectively are formed. At the same time the part Ahas a. downward narrowed, deepgoing wedge e. The lowest part B of the rail head has two slanting upand out-ward directed branches f, 9 fitting the grooves a, b, and one for the wedge 6 corresponding to groove it. When the thus formed part A is placed 011 the part B as shown in Fig. 3, and the whole rail is sunk in the road bed, both parts will act as an integral piece, and a shifting of the part A in a sideway direction is pre vented. As mentioned the ends of the rail parts A as well as the ends of the parts B can be united by autogenous welding or the like, and in order to prevent the shifting in the longitudinal direction of the parts there can for each rail length be inserted one or more blocks 71 of a suitable length in both rail parts A and B.

The two rail parts can easily be made by rolling. lVhen a rail renewal has to take place, it 15 not necessary as hitherto to break up the substratum quite down to the rail foot, but only to remove the edge stones, wooden stubs or the like surrounding the rail heads, and thus much time as well as material will be saved.

The cut through the rail head can of course be executed in other ways than this shown. For instance the borders 0 and (I may grasp deeper than shown, and the adommg planes can moreover engage in each other in any suitable way whatevenif only their engagement is capable of preventing the shifting of the part A on the underlying part B.

Having now described our invention, what we clalm is: V

1. In a railway rail, a member having a base, a shank and a head, said head having a longitudinal recess in its upper side, the sides of which recess converge downwardly, and also having oppositely downwardly and outwardly inclined upper side edges, and an upstanding flange between one of said in clined upper side edges and one of said sides of said recess; and a member having a head presenting a downwardly extending portion corresponding in cross section with said recess and entering the same, said lastnamed member alsohaving side portions complementar in cross section to the side portions of the rst named member.

2. In a railway rail, a member havin a base, a shank and a head, said head havmg a longitudinal recess in its upper side, the sides of which recess converge downwardly, and also having oppositely downwardly and outwardly inclined upper side edges, and an upstanding flange between one of said inelined upper side edges and one of said sides of said recess; and a member having a head presenting a downwardly extending portion corresponding in cross section with said recess and entering the same, said last named member also having side portions complementary in cross section to the side portions of the first named member, and a spline member arranged in grooves in the portions of the said members forming the bottom 01" said recess and the bottom of said second named head.

In witness whereof We affix our signatures.

CARL ANDERSEN. LORIS CHRISTIANSEN. LUDVIG FLODIN. ALBERT FLODIN. 

